My husband lives in a nursing home,

Tell us a bit about yourself here.
I have had two financial assessments and pay towards his care,just received a letter to say his DLA
Will be changing,will he be able to apply for PIP
Hi Joy, welcome to the forum.

I suggest you ring the Carers UK helpline for excellent advice. I'm not trying to dodge the issue, just don't know the answer, because where there is a spouse, i.e. you, and he is under 65 apparently, it's a fairly unusual situation, and the assessment rules are even more complicated. I know that you should have been given the option of being assessed jointly, or separately, was this explained to you.
Are you aware of Continuing Healthcare?